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diff --git a/app/src/main/java/org/apache/commons/net/ftp/parser/ConfigurableFTPFileEntryParserImpl.java b/app/src/main/java/org/apache/commons/net/ftp/parser/ConfigurableFTPFileEntryParserImpl.java
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+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.commons.net.ftp.parser;
+
+import org.apache.commons.net.ftp.Configurable;
+import org.apache.commons.net.ftp.FTPClientConfig;
+
+import java.text.ParseException;
+import java.util.Calendar;
+
+
+/**
+ * <p>
+ * This abstract class implements the common timestamp parsing
+ * algorithm for all the concrete parsers.  Classes derived from
+ * this one will parse file listings via a supplied regular expression
+ * that pulls out the date portion as a separate string which is
+ * passed to the underlying {@link FTPTimestampParser delegate} to
+ * handle parsing of the file timestamp.
+ * </p><p>
+ * This class also implements the {@link Configurable Configurable}
+ * interface to allow the parser to be configured from the outside.
+ * </p>
+ * @since 1.4
+ */
+/**
+ * To change the template for this generated type comment go to
+ * Window - Preferences - Java - Code Style - Code Templates - Comments
+ */
+public abstract class ConfigurableFTPFileEntryParserImpl 
+extends RegexFTPFileEntryParserImpl 
+implements Configurable 
+{
+
+    private FTPTimestampParser timestampParser;
+    
+    /**
+     * Only constructor for this absract class.
+     * @param regex  Regular expression used main parsing of the 
+     * file listing.
+     */
+    public ConfigurableFTPFileEntryParserImpl(String regex)
+    {
+        super(regex);
+        this.timestampParser = new FTPTimestampParserImpl();
+    }
+
+    /**
+     * This method is called by the concrete parsers to delegate
+     * timestamp parsing to the timestamp parser.
+     * <p>
+     * @param timestampStr the timestamp string pulled from the 
+     * file listing by the regular expression parser, to be submitted
+     * to the <code>timestampParser</code> for extracting the timestamp.
+     * @return a <code>java.util.Calendar</code> containing results of the 
+     * timestamp parse. 
+     */
+    public Calendar parseTimestamp(String timestampStr) throws ParseException {
+        return this.timestampParser.parseTimestamp(timestampStr);
+    }
+
+
+    /**
+     * Implementation of the {@link  Configurable  Configurable}
+     * interface. Configures this parser by delegating to the
+     * underlying Configurable FTPTimestampParser implementation, '
+     * passing it the supplied {@link  FTPClientConfig FTPClientConfig}
+     * if that is non-null or a default configuration defined by
+     * each concrete subclass.
+     * </p> 
+     * @param config the configuration to be used to configure this parser.
+     * If it is null, a default configuration defined by
+     * each concrete subclass is used instead.
+     */
+    public void configure(FTPClientConfig config)
+    {
+        if (this.timestampParser instanceof Configurable) {
+            FTPClientConfig defaultCfg = getDefaultConfiguration();
+            if (config != null) {
+                if (null == config.getDefaultDateFormatStr()) {
+                    config.setDefaultDateFormatStr(defaultCfg.getDefaultDateFormatStr());
+                }
+                if (null == config.getRecentDateFormatStr()) {
+                    config.setRecentDateFormatStr(defaultCfg.getRecentDateFormatStr());
+                }
+                ((Configurable)this.timestampParser).configure(config);
+            } else {
+                ((Configurable)this.timestampParser).configure(defaultCfg);
+            }
+        }
+    }
+    
+    /**
+     * Each concrete subclass must define this member to create
+     * a default configuration to be used when that subclass is
+     * instantiated without a {@link  FTPClientConfig  FTPClientConfig}
+     * parameter being specified.
+     * @return the default configuration for the subclass.
+     */
+    protected abstract FTPClientConfig getDefaultConfiguration();
+}